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Looking at potential scenery transformation/coordinate system problems.

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This commit is contained in:
curt 1997-07-12 02:27:07 +00:00
parent 6c1e197290
commit 392f23ab35
4 changed files with 59 additions and 11 deletions
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5
Main/depend
View file

@ -19,5 +19,6 @@ GLmain.o: GLmain.c ../constants.h ../Aircraft/aircraft.h \
../Aircraft/../Controls/../limits.h ../Scenery/mesh.h \
../Scenery/scenery.h ../Math/mat3.h ../Math/polar.h \
../Math/../types.h ../Timer/fg_timer.h
mesh2GL.o: mesh2GL.c ../constants.h ../Scenery/mesh.h ../Math/mat3.h \
../Math/polar.h ../Math/../types.h
mesh2GL.o: mesh2GL.c ../constants.h ../Scenery/mesh.h \
../Scenery/scenery.h ../Math/mat3.h ../Math/polar.h \
../Math/../types.h

50
Main/mesh2GL.c
View file

@ -33,6 +33,39 @@
#include "../Math/polar.h"
/* The following routine is a real hack used for testing puposes only
* and should probably be removed. */
void mesh_make_test_object(double lon, double lat) {
struct fgCartesianPoint origin;
double elev;
double b = 0.25;
double h = 0.50;
static GLfloat color[4] = { 1.0, 0.25, 0.25, 1.0 };
glMaterialfv( GL_FRONT, GL_AMBIENT_AND_DIFFUSE, color );
elev = mesh_altitude(lon, lat) * 0.001;
printf("Elevation of test structure is: %.2f\n", elev);
printf("Center of structure geodetic: (%.2f, %.2f\n", lon, lat);
origin = fgGeodetic2Cartesian(lon*ARCSEC_TO_RAD, lat*ARCSEC_TO_RAD);
printf("Center (unit circle) is (%.8f, %.8f, %.8f)\n", origin.x, origin.y,
origin.z);
origin = fgRotateCartesianPoint(origin);
printf("Center of structure is: (%.4f, %.4f\n", origin.y, origin.z);
glBegin(GL_TRIANGLE_STRIP);
glVertex3d(origin.y + b, origin.z-b, elev);
glVertex3d(origin.y - b, origin.z-b, elev);
glVertex3d(origin.y, origin.z, elev+h);
glVertex3d(origin.y - b, origin.z+b, elev);
glVertex3d(origin.y + b, origin.z+b, elev);
glVertex3d(origin.y + b, origin.z-b, elev);
glEnd();
}
/* walk through mesh and make ogl calls */
GLint mesh2GL(struct mesh *m) {
GLint mesh;
@ -48,7 +81,10 @@ GLint mesh2GL(struct mesh *m) {
printf("In mesh2GL(), generating GL call list.\n");
istep = jstep = cur_scenery_params.terrain_skip ; /* Detail level */
/* Detail level. This is how big a step we take as we walk
* through the DEM data set. This value is initialized in
* .../Scenery/scenery.c:fgSceneryInit() */
istep = jstep = cur_scenery_params.terrain_skip ;
/* setup the batch transformation */
fgRotateBatchInit(-m->originx * ARCSEC_TO_RAD, -m->originy * ARCSEC_TO_RAD);
@ -125,6 +161,9 @@ GLint mesh2GL(struct mesh *m) {
y2 += m->col_step * istep;
}
/* this will go, it's only here for testing/debugging */
mesh_make_test_object(-398391.28, 120070.41);
glEndList();
return(mesh);
@ -133,10 +172,13 @@ GLint mesh2GL(struct mesh *m) {
/* $Log$
/* Revision 1.30 1997/07/11 03:23:18 curt
/* Solved some scenery display/orientation problems. Still have a positioning
/* (or transformation?) problem.
/* Revision 1.31 1997/07/12 02:27:07 curt
/* Looking at potential scenery transformation/coordinate system problems.
/*
* Revision 1.30 1997/07/11 03:23:18 curt
* Solved some scenery display/orientation problems. Still have a positioning
* (or transformation?) problem.
*
* Revision 1.29 1997/07/11 01:29:58 curt
* More tweaking of terrian floor.
*

2
Scenery/depend
View file

@ -1,6 +1,6 @@
common.o: common.c common.h
geometry.o: geometry.c geometry.h mesh.h
mesh.o: mesh.c mesh.h common.h
mesh.o: mesh.c scenery.h mesh.h common.h
parser.o: parser.c parsevrml.h geometry.h common.h mesh.h scenery.h
scanner.o: scanner.c parser.h
scenery.o: scenery.c scenery.h parsevrml.h

11
Scenery/mesh.c
View file

@ -24,7 +24,9 @@
**************************************************************************/
#ifndef __CYGWIN32__
# include <malloc.h>
#endif
#include <stdio.h>
#include <stdlib.h> /* atof(), atoi() */
#include <string.h>
@ -249,10 +251,13 @@ double mesh_altitude(double lon, double lat) {
/* $Log$
/* Revision 1.12 1997/07/11 03:23:19 curt
/* Solved some scenery display/orientation problems. Still have a positioning
/* (or transformation?) problem.
/* Revision 1.13 1997/07/12 02:27:11 curt
/* Looking at potential scenery transformation/coordinate system problems.
/*
* Revision 1.12 1997/07/11 03:23:19 curt
* Solved some scenery display/orientation problems. Still have a positioning
* (or transformation?) problem.
*
* Revision 1.11 1997/07/11 01:30:02 curt
* More tweaking of terrian floor.
*